Will my obesity cause me to have a difficult child labor?

Yes. Obesity can cause complications during labor. It increases the length of labor and increases the risk for c-sections, both emergent and non-emergent. It is also a risk factor for bigger babies which can lead to shoulder dystocia. Obtaining spinal or epidural anesthesia can also be more difficult.
Yes. You run the risk of emergent or nonemergent c-sections. You also run the risk of shoulder dystocia with labor. Please consult your obstetrician gynecologist and ways for you to lose weight. Hopefully, you have your weight under control prior to your pregnancy.